How to Answer Hardy-Weinberg Questions - A-level Biology - with question pack

How to understand and answer Hardy-Weinberg Questions - A-level Biology. Remember to look out for questions where they give you a dominant phenotype frequency -for instance Huntingdons disease, where the frequency of the sufferers is 1 in 100000 - therefore q squared (recessive allele phenotype) is 99999 in 100000.

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Unearthly Linkage - Children of Mr Spock - A level Biology Challenge

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Mr Spock, 2nd officer of the Starship Enterprise, has a Vulcanian father - Sarek. His mother - Amanda Grayson, is from Earth.

Vulcanians have pointed ears (P), adrenal-absent (A) and a right sided heart (R), all dominant to the human alleles.

The alleles for adrenal and heart are located on the same chromosome, while those for ear shape lie on a different chromosome.

If Mr Spock were to marry a woman from Earth, what would be the probability that?

·       Their first child would have all Mr Spock’s characters?

·       Their first child would have adrenal absent, but have human heart and ears?

·       That if they had 2 children, one would have human features and the other Vulcanian?